Power steering pump.
Super car, it went like the clappers, comfortable, and very, very reliable.
Some areas were of cheap plastic (coin holder drawer), and doors seemed a bit 'tinny' when closing, but apart from that, I was very pleased with it.
If Rover hadn't gone belly up, I would have bought another - perhaps more British people should have supported their own countries efforts instead of buying foreign!
My mate had a 1996 400. His wash brush went straight through the rear lower panel, it was that rusty.